Abstract
The Dublin City University participation in the CLEF 2005 CL-SR task concentrated on exploring the application of our existing information retrieval methods based on the Okapi model to the conversational speech data set. This required an approach to determining approximate sentence boundaries within the free-flowing automatic transcription provided to enable us to use our summary-based pseudo relevance feedback (PRF). We also performed exploratory experiments on the use of the metadata provided with the document transcriptions for indexing and relevance feedback. Topics were translated into English using Systran V3.0 machine translation. In most cases Title field only topic statements performed better than combined Title and Description topics. PRF using our adapted method is shown to be affective, and absolute performance is improved by combining the automatic document transcriptions with additional metadata fields.
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Lam-Adesina, A.M., Jones, G.J.F. (2006). Dublin City University at CLEF 2005: Cross-Language Speech Retrieval (CL-SR) Experiments. In: Peters, C., et al. Accessing Multilingual Information Repositories. CLEF 2005. Lecture Notes in Computer Science, vol 4022. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11878773_87
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DOI: https://doi.org/10.1007/11878773_87
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